William toshach



W. TOSHACH.

Car Spring. No. 60,805. Patented Jan. l, 1867.

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TO ALL WHOMv ITMAY'CONCERN: y

Beit known that I, WILLIAM TOSHACH, of New York city, in the county and State of New York, have invented certain'new and useful improvements in the'construction of Railway Car Springs; and I do hereby declare that the following is a` full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part of this specification.

The nature of my invention consists in the combination of a series of rectangular elastic plates of metal, made of graduated lengths, with an enclosing case and a suitable pressure-plate, and with interposed packingsprings of India. rubber, or its equivalent, in any suitable shape. The plates may be either used Hat and straight,

so as to'be bent under the weight and pressure of aload, or be curved longitudinally, so as to be straightened under the load. In the accompanying drawings Figure 1 isa longitudinal section of one of my improved combination springs, constructed of straight dat plates.

Figure 2 is a plan or top view of iig. 1.

Figure 3, a transverse section in the line :u rt, fig. 2; and

Figure 4, a longitudinal section of one of my improved combination springs, constructed of a series of elastic metal plates curved longitudinally.

Similar letters indicate like-parts in all of the figures.

This spring is composed of a series of thin straight elastic metal plates, A, of varying lengths, which are superimposed in a pile, commencing with the shortest and finishing with the longest, in such a manner as that each succeeding plate shall project equally at each end beyond that immediately beneath it. The shortest plate, forming l.the base of the series, rests upon the flat bottom plate of a rectangular casing, @which is to contain the spring; this bottom plate forming, in double-acting springs, a diaphragm or partition between. the upper and lower halves or divisions of the same. The pressure-plates B of the spring are provided-.with `a rim Aor ilange, a, projecting equally from their edges, and they are'made equal in length to the longest or upper elastic plates of the spring, but so muchgwider as that the side iianges will overlap the sides of said plates, as seen in iig. 3 of the drawings. These pressure-plates, B, play closely Within the casing C, (which isl madejust large .enough to receive the same,) and, as will be seen, their ilanges bear only upon the ends of the elastic plates, leaving them free to bend or play within or between thesame. The springs are completed by the interposition of India-rubber compensating springs, D, which are interposed between the elastic plates and the pressure-plates within the flanges of the latter, vas seen in the accompanying drawings. These India-rubber springs may be of any desired form or shape, either convexical, double convex, double concave, cylindrical, spherical, or in fact in any desired form. In order to give steadiness to the play of the pressure-plates B, within the casingr C, studs may be formed upon the inner sides of saidA casing to fit into corresponding grooves in the outer sides of the`lianged pressureplates, as illustrated in the topview, lfig. 2. Thel India-'rubber compensating springs may he also retained in place by means of groovesin the enclosing casing. The pressure-plates may, in the large-sized springs, be strengthened by means of transverse ribs or partitions.l When the springs are to be used under both light and heavy loads, as in the case of passenger cars, the rubber springs should be made so much larger or higherI than the anges ofthe pressure-plates, as to'lift them above the elastic metallic plates, so that they will not come in contact therewith until the rubber springs are partially compressed. The rubber is Ythus made'to sustain the lighter loads, leaving the metallic plates to sustain, in combination with the rubber, the heavierloads. By making the length or height of the ianges greater than the thickness or height of the rubber springs, the metallic springs will first receive the pressure of' the load I contemplate packing the ends of the metallic plates, as well. as the top thereof, Vwith rubber, and placing between said plates India rubber, felt, or other gummy or fibrous' material. Instead of using perfectly straight metallicl plates, in combination with rubberwithin an enclosing casing, to be deflected or curved by the pressure ofthe load thereon, Idesign using also curved metallic plates, arranged in the mannerhereinbefore described, that is, in a pile consisting of plates each one longer than that beneath it, so that the ends .of the longest plate shall receive the pressure of the load7 the shortest or base-plate Vhaving only a central support, and the Whole included within a suitable casing in combination with rubber compensating springs. Fig. 4,0f the accompanying drawing illustrates a spring so arranged. In these springs the ou, nos

plates are straightened by the pressure of the load, instead of being curved thereby, as in those illustrated in figs. l an'd 3.

Itis evident that these springs may all be made single, as well as in the double form illustrated by the drawings. These springs may be'more easily and cheaply made, and are more elastic and durable than circular' plates similarly arranged, for the latter naturally buckle in a short time by the undue tension of the fibres of the iron straining and spreading apart at the periphery of the disks, and so lose their elasticity.

Having thus fully described Iny invention, I claim therein as new, and desire to secure by Letters Patent-- A series of thin elastic rectangular metallic plates, either straight or curved, of graduated lengths, in combination with colnpensating rubber springs, and a suitable casing, when so arranged as to be delieeted if made straight, or straightened if used in curved form, by means of langedpressure-plates, the Whole constructed and operating substantially in the manner and for .the purpose herein set forth.

i The foregoing specification of rey improved 'railway-ear spring signed by me this thirtieth day of December,

WILLM TOSHAOH.

Witnesses'.

ALBERT BUTLER, ARTHUR J, MUNDY. 

